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  <xs:element id="odc_BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeTax" abstract="false" name="BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="odc_CustomerListAmortizationMember" abstract="true" name="CustomerListAmortizationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="odc_SeriesDSeniorNotesMember" abstract="true" name="SeriesDSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOtherNonCashCharges" abstract="false" name="BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOtherNonCashCharges" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="odc_RevenuebyPrincipalProductbyOperatingSegmentAbstract" abstract="true" name="RevenuebyPrincipalProductbyOperatingSegmentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="odc_CatLitterMember" abstract="true" name="CatLitterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_IndustrialandSportsMember" abstract="true" name="IndustrialandSportsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_AgriculturalandHorticulturalMember" abstract="true" name="AgriculturalandHorticulturalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_BleachingClayandFluidsPurificationMember" abstract="true" name="BleachingClayandFluidsPurificationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_AnimalHealthandNutritionMember" abstract="true" name="AnimalHealthandNutritionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_SegmentReportingInformationAdvertisingExpenseForReportableSegment" abstract="false" name="SegmentReportingInformationAdvertisingExpenseForReportableSegment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="odc_SegmentReportingInformationOperatingIncomeForReportableSegment" abstract="false" name="SegmentReportingInformationOperatingIncomeForReportableSegment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="odc_DomesticOperationsMember" abstract="true" name="DomesticOperationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_ForeignOperationsMember" abstract="true" name="ForeignOperationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_SalesOrTransfersBetweenGeographicAreas" abstract="false" name="SalesOrTransfersBetweenGeographicAreas" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="odc_SeriesBSeniorNotesMember" abstract="true" name="SeriesBSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_SeriesCSeniorNotesMember" abstract="true" name="SeriesCSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_ShelfNotes" abstract="false" name="ShelfNotes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="odc_LineOfCreditFacilityAccordionProvisionIncreaseLimit" abstract="false" name="LineOfCreditFacilityAccordionProvisionIncreaseLimit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="odc_PermittedAcquisitionsThreshold" abstract="false" name="PermittedAcquisitionsThreshold" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="odc_FinancialInstrumentsAbstract" abstract="true" name="FinancialInstrumentsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="odc_U.S.TaxImpactsOfForeignBranch" abstract="false" name="U.S.TaxImpactsOfForeignBranch" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="odc_EffectiveIncomeTaxRateReconciliationChangeInForeignEffectiveTaxRatePercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationChangeInForeignEffectiveTaxRatePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="odc_DeferredTaxAssetLiabilityAxis" abstract="true" name="DeferredTaxAssetLiabilityAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="odc_DeferredTaxAssetLiabilityDomain" abstract="true" name="DeferredTaxAssetLiabilityDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_DeferredTaxAssetMember" abstract="true" name="DeferredTaxAssetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_DeferredTaxLiabilityMember" abstract="true" name="DeferredTaxLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_DeferredTaxAssetLeaseLiabilities" abstract="false" name="DeferredTaxAssetLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="odc_DeferredTaxLiabilityForeignSubsidiaries" abstract="false" name="DeferredTaxLiabilityForeignSubsidiaries" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="odc_ForeignandStateTaxStatuteOfLimitations" abstract="false" name="ForeignandStateTaxStatuteOfLimitations" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="odc_A2006PlanMember" abstract="true" name="A2006PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_DeferredCompensationMember" abstract="true" name="DeferredCompensationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="odc_DeferredCompensationInterestExpense" abstract="false" name="DeferredCompensationInterestExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
